How we rate products
SahiRating helps you find the best-rated products in India without reading hundreds of reviews. Every product in a category is scored the same way, so the scores compare fairly.
- We shortlist
The most popular and best-reviewed models sold in India, across price bands. - We research
Official specs, certifications, warranty and service, and patterns in real owner feedback — including common complaints. - We score
A SahiRating score out of 10, plus “Best for” scores for real uses like a Delhi winter or a bedroom at night. - We update
Picks are re-checked when new models launch or owner feedback changes.
Our score scale
What we don’t do
We do not lab-test products ourselves unless a review clearly says so. No brand can pay to be listed or to change a score. Amazon prices and star ratings shown on our pages come directly from Amazon.
Air purifier scoring formula
Air purifier scores are calculated from manufacturer-published specifications. The same formula is used for every model:
- Cleaning power (45%): 4 + CADR ÷ 100, capped at 10. Example: 400 m³/h scores 8.0.
- Quietness (30%): 13.5 − 0.2 × lowest published noise in dB, between 0 and 10. Example: 20 dB scores 9.5.
- Warranty (25%): 1 year = 6, 2 years = 7.5, 3–4 years = 8.5, 5+ years = 9.5.
If a brand does not publish a number, we show “Not published” and share that weight between the other parts. Filter prices are shown where the brand publishes them but are not yet part of the score. We do not use Amazon ratings in our score.
TWS earbuds scoring formula
Earbud scores are calculated from manufacturer-published specifications. Specs cannot measure sound quality, so our score covers features and ownership, not how the earbuds sound.
- Noise cancellation (35%): no ANC = 4; with ANC, 4 + claimed dB ÷ 10, capped at 10. Example: 50 dB scores 9.0.
- Battery (25%): 4 + total hours with case ÷ 10, capped at 10. Example: 40 hours scores 8.0.
- Call microphones (15%): 1 mic = 5, 2 = 6.5, 4 = 8, 6 = 9.5.
- Water/dust rating (10%): IPX4 = 6, IPX5 = 7.5, IP55 = 8.5.
- Warranty (15%): 6 months = 3, 9 months = 4.5, 1 year = 6, 2 years = 7.5.
If a brand does not publish a number, we show “Not published” and share that weight between the other parts.
